Can you change the hierarchy within the tickets on the map?

We have already produced a user story map - the backbone of the map consists of groups of capabilities. Each capability group breaks down into capabilities and each capability then breaks down into features. A capability is equivalent to an epic. So each column is in effect a list of Epics.

We prioritise the capability first before breaking them down into their component features. Once we have a list of features, we then prioritise those features before selecting them for a sprint.

Does this mean your product won't work with us or can you suggest an alternative means of achieving this?